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Finding the Fourth Proportional to 7,161.59, 10,745.90 and 5,417.26

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Solution

The fourth proportional to 7,161.59, 10,745.90 and 5,417.26 is: 8,128.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,161.59 : 10,745.90 = 5,417.26 : x
  2. Step 2: Convert to fraction form
    7,161.59/10,745.90 = 5,417.26/x
  3. Step 3: Cross multiply
    7,161.59x = 10,745.90 × 5,417.26
  4. Step 4: Simplify right side
    7,161.59x = 58,213,334.23
  5. Step 5: Solve for x
    x = 58,213,334.23/7,161.59
  6. Step 6: Final answer
    x = 8,128.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.